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61,689
RESULTS

Media Type
12
collections
38,572
texts
15,181
movies
5,240
audio
2,502
images
133
data
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Availability
60,411
Always Available
1,180
Available to Borrow
98
Waitlist
Topics & Subjects
11,067
Air Force
10,821
U.S. Air Force
10,780
UFO
10,778
UFOs
10,772
Unidentified Flying Objects
10,771
Project Blue Book
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Collection
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Creator
10,772
u.s. air force
8,086
defense technical information center
7,029
nasa technical reports server (ntrs)
883
david alpern
648
nasa
580
eric
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Language
49,946
English
154
German
104
Spanish
90
French
75
undetermined
47
Greek
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